Question

、写一个圆类Circle作为下列给出的点类point派生类,圆类Circle中增加圆的半径,并为两个类写构造函数和显

Answer 1

class Point{

public:

Point();

}

class Circle:public Point{

public:

Circle();

void show(){

cout>>"I am a circle">>endl;

}

void area(int radius){

cout>>"My area is ">>radius*radius*3.14>>endl;

}

private:

int radius;

}